Abstract:
:Whether hybridization generates or erodes species diversity has long been debated, but to date most studies have been conducted at small taxonomic scales. Salamanders (order Caudata) represent a taxonomic order in which hybridization plays a prevalent ecological and evolutionary role. We employed a recently developed model of trait-dependent diversification to test the hypothesis that hybridization impacts the diversification dynamics of species that are currently hybridizing. We find strong evidence supporting this hypothesis, showing that hybridizing salamander lineages have significantly greater net-diversification rates than non-hybridizing lineages. This pattern is driven by concurrently increased speciation rates and decreased extinction rates in hybridizing lineages. Our results support the hypothesis that hybridization can act as a generative force in macroevolutionary diversification.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Patton AH,Margres MJ,Epstein B,Eastman J,Harmon LJ,Storfer Adoi
10.1038/s41598-020-63378-wsubject
Has Abstractpub_date
2020-04-16 00:00:00pages
6566issue
1issn
2045-2322pii
10.1038/s41598-020-63378-wjournal_volume
10pub_type
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